Bleeding Radiator Combination Boilers

Radiator combination boilers are popular to use in certain types of climates. In order to prevent any damage and the cost it would take to fix any parts you need to find the best way to take care of it. The most popular problem will occur directly in the radiators. If it is not giving off heat like normal than you will need to bleed it.

Touch the radiator to see how it feels. It is hot on the bottom – but cold on the top? This is a problem. You need to bleed it so that it will start to work again. This process is fairly simple to do and will take around thirty minutes. You will need to have a rag, small bowl, water, and a bleed key.

Turn of the power to the boiler from the main switch. This switch is usually situated near the boiler and will have a clear sign for it.

Put the bleed key into the bleed valve that is on the top of the boiler. The valve will look like a small brass screw that is recessed in the edge of the radiator. It also might look like a small screw that is situated in the knob on the side of the unit. You will either need a regular or allen screw.

Now you will need to cover the bleed key using the rag and place the small bowl underneath it on the floor. This will keep you from being burned when the water comes out.

Turn the key counterclockwise a quarter of an inch. This should create a type of hissing noise when the air comes out. Wait until the noise has subsided and a small amount of water is coming out of the valve. Turn the key clockwise and close it.

Now look at the boiler and check the bar gauge that is on the top. If it is less than one bar you will need to add water to the boiler. Do this until there is a complete bar.